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FierroCBruneDShawMSchwartzHKnightlyCLinJet alSafety and immunogenicity of a messenger RNAbased cytomegalovirus vaccine in healthy adults: results from a phase 1 randomized clinical trial

Or, they're just not listed at all and can only be found with exact chemical testing

A 2024 critical review noted that unexpectedly high B12 levels can be further investigated by a clinician if needed, preferably by directly measuring the carrier proteins haptocorrin and transcobalamin rather than relying on the commonly ordered PEG precipitation test, which the authors found nonspecific and potentially misleading (Fedosov, 2024)

Energy Boost One of the primary benefits of B12 injections is their ability to combat fatigue and boost energy levels